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master's thesis
Uklanjanje nanočestica srebra iz vode magnetskim poljem
Zagreb: University of Zagreb, Faculty of Science, 2019. urn:nbn:hr:217:588482
Todorić, Katarina
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

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Todorić, K. (2019). Uklanjanje nanočestica srebra iz vode magnetskim poljem (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:588482

Todorić, Katarina. "Uklanjanje nanočestica srebra iz vode magnetskim poljem." Master's thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:588482

Todorić, Katarina. "Uklanjanje nanočestica srebra iz vode magnetskim poljem." Master's thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:588482

Todorić, K. (2019). 'Uklanjanje nanočestica srebra iz vode magnetskim poljem', Master's thesis, University of Zagreb, Faculty of Science, accessed 28 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:588482

Todorić K. Uklanjanje nanočestica srebra iz vode magnetskim poljem [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2019 [cited 2024 April 28] Available at: https://urn.nsk.hr/urn:nbn:hr:217:588482

K. Todorić, "Uklanjanje nanočestica srebra iz vode magnetskim poljem", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:217:588482

Metadata
TitleUklanjanje nanočestica srebra iz vode magnetskim poljem
Title (english)Removal of silver nanoparticles from water using magnetic field
AuthorKatarina Todorić
MentorDamir Pajić (mentor)
Committee memberDamir Pajić (predsjednik povjerenstva)
Committee memberŽeljko Skoko (član povjerenstva)
Committee memberKatarina Jeličić (član povjerenstva)
Committee memberDalibor Paar (član povjerenstva)
Committee memberMaja Planinić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2019-11-29, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
U prošlom stoljeću došlo je do velikog razvoja nanotehnologije i nanomaterijala koji su našli veliku primjenu u industriji. Nanočestice (NP) su čestice čije su dimenzije od 1 nm do 100 nm. U ovom diplomskom radu obratit ćemo pozornost na metalne nanočestice, odnosno nanočestice srebra (AgNP). Iako se AgNP koristi u širokom dijelu industrije, istraživanjima se pokazalo da imaju i neke štetne učinke u ekosustavu. Vođeni idejom njegovog lošeg utjecaja, u ovom diplomskom radu pokušat ćemo pronaći način kako AgNP ukloniti iz okoliša, točnije iz otpadnih voda putem kojih dospijevaju u okoliš, gdje imaju najveći štetni utjecaj. Krenuvši od proučavanja magnetskih svojstava feromagnetskih materijala, doći ćemo do svojstva koje obilježava NP, a to je magnetski moment velikog iznosa. To novo svojstvo naziva se superparamagnetizam. U ovom diplomskom radu dokazati ćemo da i AgNP pokazuju superparamagnetska svojstva. To svojstvo iskoristit ćemo u prijedlogu modeliranja filtara koji će uklanjati AgNP iz otpadnih voda pomoću permanentnog magneta. Nehomogeno magnetsko polje magneta djeluje na AgNP silom zbog njegovog velikog magnetskog momenta čiji ćemo utjecaj na gibanje dodatno istražiti. Opisat će se zamišljeni način izvedbe filtara te do kojih problema dolazimo prilikom njihove konstrukcije. Komentirat ćemo dobivene rezultate zamišljenih filtara te objasniti na koji će se način postići bolja učinkovitost odvajanja AgNP iz vode.
Abstract (english)
Over the last century, nanotechnology and nanomaterials have developed greatly and found application in industry. Nanoparticles (NPs) are particles between 1 nm and 100 nm in size. In this thesis, we focus on metal nanoparticles, i.e. silver nanoparticles (AgNPs). Although AgNPs have been widely used in industry, research has shown that AgNPs also have significant adverse impacts on ecosystem. In view of these negative impacts, in this thesis we will try to find the way how to remove AgNPs from the environment; to be more accurate, from wastewater where they show the strongest adverse effect. Starting from the study of the magnetic properties of ferromagnetic materials, we will come to the property which characterizes NPs, and that is magnetic moment of large magnitude. This new property is called superparamagnetism. In this thesis, we will prove that AgNPs show superparamagnetic properties. We use this property to propose construction of filter which removes AgNPs from wastewater using permanent magnet. The inhomogeneous magnetic field of magnet acts by force on AgNPs due to its large magnetic moment, whose influence will be investigated additionally. We will describe the imagined construction of filter and explain how to achieve better efficiency of separation of AgNPs from water.
Keywords
Languagecroatian
URN:NBNurn:nbn:hr:217:588482
Study programmeTitle: Physics and Computer Science; specializations in: Education
Course: Education
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra fizike i informatike (magistar/magistra fizike i informatike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-01-07 12:19:49